Electric accumulator.



H. LEITNEB 64 W, H. EXLEY.

ELECTRIC ACCUMULATOR.

APPLICATION FilED rm. l. mu

Patented Aug. 13, 1915;

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rmrrnp STATES Parana enrich nanny nnrrnnra, or wns'rmms'rnn, LONDON, AnnWILLIAM HERBERT EXLEY, or MAYBURY HILL, woxrne, ENGLAND.

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Specification of Letters Patent.

Patented Aug. 13, 1918.

Application filed February 1, 1918. Serial No. 214,978.

Our invention relates to plates or elements forelectric accumulators,and to that class of plate comprising a support of an insulatingmaterial, such as celluloid, vulcanite, vulcanized fiber, wood, preparedWood or the like, which carries a metal conductor around which theactive material is em bedded. I

Now, accordiilg to our invention, which has for its object improvementsin plates or elements of this type, both of the single pole and doublepole forms, we make use of a non-conducting support of wood, or woodpulp, or other preparation of wood which is preferably of a porousnature, the said support being formed or provided with a series ofrectilinear grooves, the adjacent grooves or spaces being separated bysolid portions of the wood support, and each groove or space beingdesigned to house within it a conductor embedded in active material. Forexample, the said support may be in the form of a plate having grooveson opposite faces.

In practice the positive and negative active materials may be applied toseparate supports which are oppositeto one another in the accumulatorcell. 01', and preferably, these positive and negative materials may beapplied to one and the same support, in which case the said twomaterials are separated from one another by the rods or ribs upon thepreferably porous non-conducting support.

To enable our invention to be fully understood we'will describe it byreference to .the accompanying drawings, in which Figure l is a sideelevation of a portion of anion-conducting support provided with animproved form of metallic conductor.

Fig. 2 is a side elevation of a portion of a non-conducting supportprovided with a modified form of metallic conductor.

Fig. 3 is a vertical section on the line 17 17, Fig. 2. V Fig. 4 is ahorizontal section of Fig. 1. Fig. ,5 is a horizontal section of Fig. 2.Referring to the construction of plate or element shown in the drawing,a represents a plate or strip of wood as above referred to, 6 beingvertical grooves which are cut, molded or otherwise formed in the saidplate or strip a on the opposite faces thereof, these grooves beingadvantageously made with undercut sides as clearly shown in order toform a key for the active material 5 shown in Figs. 4: and 5. Thecentral web or ungrooved portion of the plate a is furnished with anumber of holes or perforations c, and through these perforations thereare threaded metallic conductors, which are connected to the conductingstrip 6 which forms the terminal of the element.

In practice, as before stated, the active ma- I terial in adjacentgrooves of the support is of opposite polarity, so that the elementformed will be bipolar.

The metal conductor, which is mechanicallyapplied to the grooves b ofthe support as above described, is in the form of a stamped stripconsisting of a central bar or rib 2' having a number of laterallyprojecting tongues j, as shown. The tongues extend through the holes 0in the bottoms of the grooves b ofthe support a,.the said tongues beingthen bent inward toward one another in the opposite groove so thatthey'assumethe form shown in Fig. 4. An individual strip is introducedinto each ofthe grooves on one side of the plate, the said strips beingpref:

erably stamped integrally with the terminal -strip 6.

I v Fws. 2. 3 and'o show a form .of conductor,

which is similar to that shown in Figs. 1 and 4, with the exception thata single strip 71 ex-' vided with grooves sagmrzzte" i0 rial of onepolarity vided With grooves separated by tions of the support, anti anelectric conducting strip having tongues if through apertures in saidsugport anti embedded in active material.

2. An element for electric ZECCHEEUEMOIS, comprising a support of poroustions of the porous supporlocate'i in em oz grooves, and active materialof opposite p0- Ilzzirity located in an adjacent groom, said activematerial supporting conducting means, much are embecHed therein.

HENlY LEETNER.

EELZXAM HERBERT EXLEY J-Jitnesses BAGGOTT, A a HALL.

